Let's roll up our sleeves and solve this. We have 733 and we're going to multiply it by 39, essentially adding 733 to itself 39 times.
Step 1: 0 + 733 = 733
Step 2: 733 + 733 = 1466
Step 3: 1466 + 733 = 2199
Step 4: 2199 + 733 = 2932
Step 5: 2932 + 733 = 3665
Step 6: 3665 + 733 = 4398
Step 7: 4398 + 733 = 5131
Step 8: 5131 + 733 = 5864
Step 9: 5864 + 733 = 6597
Step 10: 6597 + 733 = 7330
Step 11: 7330 + 733 = 8063
Step 12: 8063 + 733 = 8796
Step 13: 8796 + 733 = 9529
Step 14: 9529 + 733 = 10262
Step 15: 10262 + 733 = 10995
Step 16: 10995 + 733 = 11728
Step 17: 11728 + 733 = 12461
Step 18: 12461 + 733 = 13194
Step 19: 13194 + 733 = 13927
Step 20: 13927 + 733 = 14660
Step 21: 14660 + 733 = 15393
Step 22: 15393 + 733 = 16126
Step 23: 16126 + 733 = 16859
Step 24: 16859 + 733 = 17592
Step 25: 17592 + 733 = 18325
Step 26: 18325 + 733 = 19058
Step 27: 19058 + 733 = 19791
Step 28: 19791 + 733 = 20524
Step 29: 20524 + 733 = 21257
Step 30: 21257 + 733 = 21990
Step 31: 21990 + 733 = 22723
Step 32: 22723 + 733 = 23456
Step 33: 23456 + 733 = 24189
Step 34: 24189 + 733 = 24922
Step 35: 24922 + 733 = 25655
Step 36: 25655 + 733 = 26388
Step 37: 26388 + 733 = 27121
Step 38: 27121 + 733 = 27854
Step 39: 27854 + 733 = 28587

So, 733*39 = 28587